Jiajie Zhong
3 years ago
committed by
GitHub
45 changed files with 1394 additions and 30 deletions
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# Minimal makefile for Sphinx documentation
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#
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# You can set these variables from the command line, and also
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# from the environment for the first two.
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# Add opts `turn warnings into errors` strict sphinx-build behavior
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SPHINXOPTS ?= -W
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SPHINXBUILD ?= sphinx-build
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SOURCEDIR = source
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BUILDDIR = build
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# Put it first so that "make" without argument is like "make help".
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help: |
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@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
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.PHONY: help Makefile |
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# Catch-all target: route all unknown targets to Sphinx using the new
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# "make mode" option. $(O) is meant as a shortcut for $(SPHINXOPTS).
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%: Makefile |
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@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
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REM Licensed to the Apache Software Foundation (ASF) under one |
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REM or more contributor license agreements. See the NOTICE file |
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REM distributed with this work for additional information |
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REM regarding copyright ownership. The ASF licenses this file |
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REM to you under the Apache License, Version 2.0 (the |
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REM "License"); you may not use this file except in compliance |
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REM with the License. You may obtain a copy of the License at |
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REM |
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REM http://www.apache.org/licenses/LICENSE-2.0 |
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REM |
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REM Unless required by applicable law or agreed to in writing, |
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REM software distributed under the License is distributed on an |
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REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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REM KIND, either express or implied. See the License for the |
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REM specific language governing permissions and limitations |
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REM under the License. |
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@ECHO OFF |
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pushd %~dp0 |
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REM Command file for Sphinx documentation |
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if "%SPHINXBUILD%" == "" ( |
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set SPHINXBUILD=sphinx-build |
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) |
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set SOURCEDIR=source |
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set BUILDDIR=build |
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REM Add opts `turn warnings into errors` strict sphinx-build behavior |
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set SPHINXOPTS=-W |
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if "%1" == "" goto help |
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%SPHINXBUILD% >NUL 2>NUL |
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if errorlevel 9009 ( |
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echo. |
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echo.The 'sphinx-build' command was not found. Make sure you have Sphinx |
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echo.installed, then set the SPHINXBUILD environment variable to point |
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echo.to the full path of the 'sphinx-build' executable. Alternatively you |
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echo.may add the Sphinx directory to PATH. |
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echo. |
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echo.If you don't have Sphinx installed, grab it from |
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echo.https://www.sphinx-doc.org/ |
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exit /b 1 |
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) |
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|
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%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O% |
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goto end |
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:help |
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%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O% |
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:end |
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popd |
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.. Licensed to the Apache Software Foundation (ASF) under one |
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or more contributor license agreements. See the NOTICE file |
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distributed with this work for additional information |
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regarding copyright ownership. The ASF licenses this file |
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to you under the Apache License, Version 2.0 (the |
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"License"); you may not use this file except in compliance |
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with the License. You may obtain a copy of the License at |
||||
|
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.. http://www.apache.org/licenses/LICENSE-2.0 |
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|
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.. Unless required by applicable law or agreed to in writing, |
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software distributed under the License is distributed on an |
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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KIND, either express or implied. See the License for the |
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specific language governing permissions and limitations |
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under the License. |
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API |
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=== |
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Core |
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---- |
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.. automodule:: pydolphinscheduler.core |
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:inherited-members: |
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Sides |
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----- |
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.. automodule:: pydolphinscheduler.side |
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:inherited-members: |
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Tasks |
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----- |
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.. automodule:: pydolphinscheduler.tasks |
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:inherited-members: |
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Constants |
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--------- |
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.. automodule:: pydolphinscheduler.constants |
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Exceptions |
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---------- |
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.. automodule:: pydolphinscheduler.exceptions |
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.. Licensed to the Apache Software Foundation (ASF) under one |
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or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
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.. http://www.apache.org/licenses/LICENSE-2.0 |
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|
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.. Unless required by applicable law or agreed to in writing, |
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software distributed under the License is distributed on an |
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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KIND, either express or implied. See the License for the |
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specific language governing permissions and limitations |
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under the License. |
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|
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Concepts |
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======== |
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In this section, you would know the core concepts of *PyDolphinScheduler*. |
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Process Definition |
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------------------ |
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Process definition describe the whole things except `tasks`_ and `tasks dependence`_, which including |
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name, schedule interval, schedule start time and end time. You would know scheduler |
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Process definition could be initialized in normal assign statement or in context manger. |
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.. code-block:: python |
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# Initialization with assign statement |
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pd = ProcessDefinition(name="my first process definition") |
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# Or context manger |
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with ProcessDefinition(name="my first process definition") as pd: |
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pd.submit() |
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Process definition is the main object communicate between *PyDolphinScheduler* and DolphinScheduler daemon. |
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After process definition and task is be declared, you could use `submit` and `run` notify server your definition. |
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If you just want to submit your definition and create workflow, without run it, you should use attribute `submit`. |
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But if you want to run the workflow after you submit it, you could use attribute `run`. |
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.. code-block:: python |
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# Just submit definition, without run it |
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pd.submit() |
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# Both submit and run definition |
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pd.run() |
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Schedule |
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~~~~~~~~ |
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We use parameter `schedule` determine the schedule interval of workflow, *PyDolphinScheduler* support seven |
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asterisks expression, and each of the meaning of position as below |
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.. code-block:: text |
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* * * * * * * |
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┬ ┬ ┬ ┬ ┬ ┬ ┬ |
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│ │ │ │ │ │ │ |
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│ │ │ │ │ │ └─── year |
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│ │ │ │ │ └───── day of week (0 - 7) (0 to 6 are Sunday to Saturday, or use names; 7 is Sunday, the same as 0) |
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│ │ │ │ └─────── month (1 - 12) |
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│ │ │ └───────── day of month (1 - 31) |
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│ │ └─────────── hour (0 - 23) |
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│ └───────────── min (0 - 59) |
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└─────────────── second (0 - 59) |
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Here we add some example crontab: |
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- `0 0 0 * * ? *`: Workflow execute every day at 00:00:00. |
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- `10 2 * * * ? *`: Workflow execute hourly day at ten pass two. |
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- `10,11 20 0 1,2 * ? *`: Workflow execute first and second day of month at 00:20:10 and 00:20:11. |
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Tenant |
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~~~~~~ |
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Tenant is the user who run task command in machine or in virtual machine. it could be assign by simple string. |
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.. code-block:: python |
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# |
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pd = ProcessDefinition(name="process definition tenant", tenant="tenant_exists") |
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.. note:: |
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Make should tenant exists in target machine, otherwise it will raise an error when you try to run command |
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Tasks |
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----- |
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Task is the minimum unit running actual job, and it is nodes of DAG, aka directed acyclic graph. You could define |
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what you want to in the task. It have some required parameter to make uniqueness and definition. |
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Here we use :py:meth:`pydolphinscheduler.tasks.Shell` as example, parameter `name` and `command` is required and must be provider. Parameter |
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`name` set name to the task, and parameter `command` declare the command you wish to run in this task. |
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.. code-block:: python |
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# We named this task as "shell", and just run command `echo shell task` |
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shell_task = Shell(name="shell", command="echo shell task") |
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If you want to see all type of tasks, you could see :doc:`tasks/index`. |
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Tasks Dependence |
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~~~~~~~~~~~~~~~~ |
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You could define many tasks in on single `Process Definition`_. If all those task is in parallel processing, |
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then you could leave them alone without adding any additional information. But if there have some tasks should |
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not be run unless pre task in workflow have be done, we should set task dependence to them. Set tasks dependence |
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have two mainly way and both of them is easy. You could use bitwise operator `>>` and `<<`, or task attribute |
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`set_downstream` and `set_upstream` to do it. |
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.. code-block:: python |
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# Set task1 as task2 upstream |
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task1 >> task2 |
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# You could use attribute `set_downstream` too, is same as `task1 >> task2` |
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task1.set_downstream(task2) |
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# Set task1 as task2 downstream |
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task1 << task2 |
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# It is same as attribute `set_upstream` |
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task1.set_upstream(task2) |
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# Beside, we could set dependence between task and sequence of tasks, |
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# we set `task1` is upstream to both `task2` and `task3`. It is useful |
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# for some tasks have same dependence. |
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task1 >> [task2, task3] |
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Task With Process Definition |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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In most of data orchestration cases, you should assigned attribute `process_definition` to task instance to |
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decide workflow of task. You could set `process_definition` in both normal assign or in context manger mode |
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.. code-block:: python |
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# Normal assign, have to explicit declaration and pass `ProcessDefinition` instance to task |
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pd = ProcessDefinition(name="my first process definition") |
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shell_task = Shell(name="shell", command="echo shell task", process_definition=pd) |
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# Context manger, `ProcessDefinition` instance pd would implicit declaration to task |
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with ProcessDefinition(name="my first process definition") as pd: |
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shell_task = Shell(name="shell", command="echo shell task", |
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With both `Process Definition`_, `Tasks`_ and `Tasks Dependence`_, we could build a workflow with multiple tasks. |
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# Licensed to the Apache Software Foundation (ASF) under one |
||||
# or more contributor license agreements. See the NOTICE file |
||||
# distributed with this work for additional information |
||||
# regarding copyright ownership. The ASF licenses this file |
||||
# to you under the Apache License, Version 2.0 (the |
||||
# "License"); you may not use this file except in compliance |
||||
# with the License. You may obtain a copy of the License at |
||||
# |
||||
# http://www.apache.org/licenses/LICENSE-2.0 |
||||
# |
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# Unless required by applicable law or agreed to in writing, |
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# software distributed under the License is distributed on an |
||||
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
# KIND, either express or implied. See the License for the |
||||
# specific language governing permissions and limitations |
||||
# under the License. |
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|
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# Configuration file for the Sphinx documentation builder. |
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# |
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# This file only contains a selection of the most common options. For a full |
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# list see the documentation: |
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# https://www.sphinx-doc.org/en/master/usage/configuration.html |
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|
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# -- Path setup -------------------------------------------------------------- |
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|
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# If extensions (or modules to document with autodoc) are in another directory, |
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# add these directories to sys.path here. If the directory is relative to the |
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# documentation root, use os.path.abspath to make it absolute, like shown here. |
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# |
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# import os |
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# import sys |
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# sys.path.insert(0, os.path.abspath('.')) |
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# -- Project information ----------------------------------------------------- |
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project = "pydolphinscheduler" |
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copyright = "2022, apache" |
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author = "apache" |
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# The full version, including alpha/beta/rc tags |
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release = "0.0.1" |
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# -- General configuration --------------------------------------------------- |
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# Add any Sphinx extension module names here, as strings. They can be |
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# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom |
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# ones. |
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extensions = [ |
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# Measures durations of Sphinx processing |
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"sphinx.ext.duration", |
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# Semi-automatic make docstrings to document |
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"sphinx.ext.autodoc", |
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"sphinx.ext.viewcode", |
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"sphinx.ext.autosectionlabel", |
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"sphinx_rtd_theme", |
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] |
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# Add any paths that contain templates here, relative to this directory. |
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templates_path = ["_templates"] |
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# List of patterns, relative to source directory, that match files and |
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# directories to ignore when looking for source files. |
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# This pattern also affects html_static_path and html_extra_path. |
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exclude_patterns = [] |
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autodoc_default_options = { |
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"members": True, |
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"show-inheritance": True, |
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"private-members": True, |
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"undoc-members": True, |
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"member-order": "groupwise", |
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} |
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autosectionlabel_prefix_document = True |
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# -- Options for HTML output ------------------------------------------------- |
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# The theme to use for HTML and HTML Help pages. See the documentation for |
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# a list of builtin themes. |
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# |
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html_theme = "sphinx_rtd_theme" |
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|
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# Add any paths that contain custom static files (such as style sheets) here, |
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# relative to this directory. They are copied after the builtin static files, |
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# so a file named "default.css" will overwrite the builtin "default.css". |
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html_static_path = ["_static"] |
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@ -0,0 +1,42 @@
|
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.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
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PyDolphinScheduler |
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================== |
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|
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**PyDolphinScheduler** is Python API for `Apache DolphinScheduler <https://dolphinscheduler.apache.org>`_, |
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which allow you definition your workflow by Python code, aka workflow-as-codes. |
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I could go and find how to :ref:`install <start:getting started>` the project. Or if you want to see simply example |
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then go and see :doc:`tutorial` for more detail. |
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|
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|
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.. toctree:: |
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:maxdepth: 2 |
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|
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start |
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tutorial |
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concept |
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tasks/index |
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api |
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|
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Indices and tables |
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================== |
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|
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* :ref:`genindex` |
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* :ref:`modindex` |
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* :ref:`search` |
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@ -0,0 +1,113 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Getting Started |
||||
=============== |
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|
||||
To get started with *PyDolphinScheduler* you must ensure python and pip |
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installed on your machine, if you're already set up, you can skip straight |
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to `Installing PyDolphinScheduler`_, otherwise please continue with |
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`Installing Python`_. |
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|
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Installing Python |
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----------------- |
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|
||||
How to install `python` and `pip` depends on what operating system |
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you're using. The python wiki provides up to date |
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`instructions for all platforms here`_. When you entering the website |
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and choice your operating system, you would be offered the choice and |
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select python version. *PyDolphinScheduler* recommend use version above |
||||
Python 3.6 and we highly recommend you install *Stable Releases* instead |
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of *Pre-releases*. |
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|
||||
After you have download and installed Python, you should open your terminal, |
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typing and running :code:`python --version` to check whether the installation |
||||
is correct or not. If all thing good, you could see the version in console |
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without error(here is a example after Python 3.8.7 installed) |
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|
||||
.. code-block:: bash |
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|
||||
$ python --version |
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Python 3.8.7 |
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|
||||
Installing PyDolphinScheduler |
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----------------------------- |
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|
||||
After Python is already installed on your machine following section |
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`installing Python`_, it easy to *PyDolphinScheduler* by pip. |
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|
||||
.. code-block:: bash |
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|
||||
$ pip install apache-dolphinscheduler |
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|
||||
The latest version of *PyDolphinScheduler* would be installed after you run above |
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command in your terminal. You could go and `start Python Gateway Server`_ to finish |
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the prepare, and then go to :doc:`tutorial` to make your hand dirty. But if you |
||||
want to install the unreleased version of *PyDolphinScheduler*, you could go and see |
||||
section `installing PyDolphinScheduler in dev`_ for more detail. |
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|
||||
Installing PyDolphinScheduler In Dev |
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------------------------------------ |
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|
||||
Because the project is developing and some of the features still not release. |
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If you want to try some thing unreleased you could install from the source code |
||||
which we hold in GitHub |
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|
||||
.. code-block:: bash |
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|
||||
# Clone Apache DolphinScheduler repository |
||||
$ git clone git@github.com:apache/dolphinscheduler.git |
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# Install PyDolphinScheduler in develop mode |
||||
$ cd dolphinscheduler-python/pydolphinscheduler && pip install -e . |
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|
||||
After you installed *PyDolphinScheduler*, please remember `start Python Gateway Server`_ |
||||
which waiting for *PyDolphinScheduler*'s workflow definition require. |
||||
|
||||
Start Python Gateway Server |
||||
--------------------------- |
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|
||||
Since **PyDolphinScheduler** is Python API for `Apache DolphinScheduler`_, it |
||||
could define workflow and tasks structure, but could not run it unless you |
||||
`install Apache DolphinScheduler`_ and start Python gateway server. We only |
||||
and some key steps here and you could go `install Apache DolphinScheduler`_ |
||||
for more detail |
||||
|
||||
.. code-block:: bash |
||||
|
||||
# Start pythonGatewayServer |
||||
$ ./bin/dolphinscheduler-daemon.sh start pythonGatewayServer |
||||
|
||||
To check whether the server is alive or not, you could run :code:`jps`. And |
||||
the server is health if keyword `PythonGatewayServer` in the console. |
||||
|
||||
.. code-block:: bash |
||||
|
||||
$ jps |
||||
.... |
||||
201472 PythonGatewayServer |
||||
.... |
||||
|
||||
What's More |
||||
----------- |
||||
|
||||
If you do not familiar with *PyDolphinScheduler*, you could go to :doc:`tutorial` |
||||
and see how it work. But if you already know the inside of *PyDolphinScheduler*, |
||||
maybe you could go and play with all :doc:`tasks/index` *PyDolphinScheduler* supports. |
||||
|
||||
.. _`instructions for all platforms here`: https://wiki.python.org/moin/BeginnersGuide/Download |
||||
.. _`Apache DolphinScheduler`: https://dolphinscheduler.apache.org |
||||
.. _`install Apache DolphinScheduler`: https://dolphinscheduler.apache.org/en-us/docs/latest/user_doc/guide/installation/standalone.html |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Condition |
||||
========= |
||||
|
||||
A condition task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_condition_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.condition |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Datax |
||||
===== |
||||
|
||||
A DataX task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_datax_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.datax |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Dependent |
||||
========= |
||||
|
||||
A dependent task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_dependent_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.dependent |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Flink |
||||
===== |
||||
|
||||
A flink task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_flink_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.flink |
||||
@ -0,0 +1,21 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
HTTP |
||||
==== |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.http |
||||
@ -0,0 +1,41 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Tasks |
||||
===== |
||||
|
||||
In this section |
||||
|
||||
.. toctree:: |
||||
:maxdepth: 1 |
||||
|
||||
shell |
||||
sql |
||||
python |
||||
http |
||||
|
||||
switch |
||||
condition |
||||
dependent |
||||
|
||||
spark |
||||
flink |
||||
map_reduce |
||||
procedure |
||||
|
||||
datax |
||||
sub_process |
||||
@ -0,0 +1,34 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Map Reduce |
||||
========== |
||||
|
||||
|
||||
A Map Reduce task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_map_reduce_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.map_reduce |
||||
@ -0,0 +1,21 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Procedure |
||||
========= |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.procedure |
||||
@ -0,0 +1,21 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Python |
||||
====== |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.python |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Shell |
||||
===== |
||||
|
||||
A shell task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/tutorial.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end task_relation_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.shell |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Spark |
||||
===== |
||||
|
||||
A spark task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_spark_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.spark |
||||
@ -0,0 +1,21 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
SQL |
||||
=== |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.sql |
||||
@ -0,0 +1,21 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Sub Process |
||||
=========== |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.sub_process |
||||
@ -0,0 +1,33 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Switch |
||||
====== |
||||
|
||||
A switch task type's example and dive into information of **PyDolphinScheduler**. |
||||
|
||||
Example |
||||
------- |
||||
|
||||
.. literalinclude:: ../../../examples/task_switch_example.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
Dive Into |
||||
--------- |
||||
|
||||
.. automodule:: pydolphinscheduler.tasks.switch |
||||
@ -0,0 +1,150 @@
|
||||
.. Licensed to the Apache Software Foundation (ASF) under one |
||||
or more contributor license agreements. See the NOTICE file |
||||
distributed with this work for additional information |
||||
regarding copyright ownership. The ASF licenses this file |
||||
to you under the Apache License, Version 2.0 (the |
||||
"License"); you may not use this file except in compliance |
||||
with the License. You may obtain a copy of the License at |
||||
|
||||
.. http://www.apache.org/licenses/LICENSE-2.0 |
||||
|
||||
.. Unless required by applicable law or agreed to in writing, |
||||
software distributed under the License is distributed on an |
||||
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
KIND, either express or implied. See the License for the |
||||
specific language governing permissions and limitations |
||||
under the License. |
||||
|
||||
Tutorial |
||||
======== |
||||
|
||||
This tutorial show you the basic concept of *PyDolphinScheduler* and tell all |
||||
things you should know before you submit or run your first workflow. If you |
||||
still not install *PyDolphinScheduler* and start Apache DolphinScheduler, you |
||||
could go and see :ref:`how to getting start PyDolphinScheduler <start:getting started>` |
||||
|
||||
Overview of Tutorial |
||||
-------------------- |
||||
|
||||
Here have an overview of our tutorial, and it look a little complex but do not |
||||
worry about that because we explain this example below as detailed as possible. |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:start-after: [start tutorial] |
||||
:end-before: [end tutorial] |
||||
|
||||
Import Necessary Module |
||||
----------------------- |
||||
|
||||
First of all, we should importing necessary module which we would use later just |
||||
like other Python package. We just create a minimum demo here, so we just import |
||||
:class:`pydolphinscheduler.core.process_definition` and |
||||
:class:`pydolphinscheduler.tasks.shell`. |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:start-after: [start package_import] |
||||
:end-before: [end package_import] |
||||
|
||||
If you want to use other task type you could click and |
||||
:doc:`see all tasks we support <tasks/index>` |
||||
|
||||
Process Definition Declaration |
||||
------------------------------ |
||||
|
||||
We should instantiate object after we import them from `import necessary module`_. |
||||
Here we declare basic arguments for process definition(aka, workflow). We define |
||||
the name of process definition, using `Python context manager`_ and it |
||||
**the only required argument** for object process definition. Beside that we also |
||||
declare three arguments named `schedule`, `start_time` which setting workflow schedule |
||||
interval and schedule start_time, and argument `tenant` which changing workflow's |
||||
task running user in the worker, :ref:`section tenant <concept:tenant>` in *PyDolphinScheduler* |
||||
:doc:`concept` page have more detail information. |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:start-after: [start workflow_declare] |
||||
:end-before: [end workflow_declare] |
||||
|
||||
We could find more detail about process definition in |
||||
:ref:`concept about process definition <concept:process definition>` if you interested in it. |
||||
For all arguments of object process definition, you could find in the |
||||
:class:`pydolphinscheduler.core.process_definition` api documentation. |
||||
|
||||
Task Declaration |
||||
---------------- |
||||
|
||||
Here we declare four tasks, and bot of them are simple task of |
||||
:class:`pydolphinscheduler.tasks.shell` which running `echo` command in terminal. |
||||
Beside the argument `command`, we also need setting argument `name` for each task *(not |
||||
only shell task, `name` is required for each type of task)*. |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:dedent: 0 |
||||
:start-after: [start task_declare] |
||||
:end-before: [end task_declare] |
||||
|
||||
Beside shell task, *PyDolphinScheduler* support multiple tasks and you could |
||||
find in :doc:`tasks/index`. |
||||
|
||||
Setting Task Dependence |
||||
----------------------- |
||||
|
||||
After we declare both process definition and task, we have one workflow with |
||||
four tasks, both all tasks is independent so that they would run in parallel. |
||||
We should reorder the sort and the dependence of tasks. It useful when we need |
||||
run prepare task before we run actual task or we need tasks running is specific |
||||
rule. We both support attribute `set_downstream` and `set_upstream`, or bitwise |
||||
operators `>>` and `<<`. |
||||
|
||||
In this example, we set task `task_parent` is the upstream task of task |
||||
`task_child_one` and `task_child_two`, and task `task_union` is the downstream |
||||
task of both these two task. |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:dedent: 0 |
||||
:start-after: [start task_relation_declare] |
||||
:end-before: [end task_relation_declare] |
||||
|
||||
Please notice that we could grouping some tasks and set dependence if they have |
||||
same downstream or upstream. We declare task `task_child_one` and `task_child_two` |
||||
as a group here, named as `task_group` and set task `task_parent` as upstream of |
||||
both of them. You could see more detail in :ref:`concept:Tasks Dependence` section in concept |
||||
documentation. |
||||
|
||||
Submit Or Run Workflow |
||||
---------------------- |
||||
|
||||
Now we finish our workflow definition, with task and task dependence, but all |
||||
these things are in local, we should let Apache DolphinScheduler daemon know what we |
||||
define our workflow. So the last thing we have to do here is submit our workflow to |
||||
Apache DolphinScheduler daemon. |
||||
|
||||
We here in the example using `ProcessDefinition` attribute `run` to submit workflow |
||||
to the daemon, and set the schedule time we just declare in `process definition declaration`_. |
||||
|
||||
Now, we could run the Python code like other Python script, for the basic usage run |
||||
:code:`python tutorial.py` to trigger and run it. |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:dedent: 0 |
||||
:start-after: [start submit_or_run] |
||||
:end-before: [end submit_or_run] |
||||
|
||||
If you not start your Apache DolphinScheduler server, you could find the way in |
||||
:ref:`start:start Python gateway server` and it would have more detail about related server |
||||
start. Beside attribute `run`, we have attribute `submit` for object `ProcessDefinition` |
||||
and it just submit workflow to the daemon but not setting the schedule information. For |
||||
more detail you could see :ref:`concept:process definition`. |
||||
|
||||
DAG Graph After Tutorial Run |
||||
---------------------------- |
||||
|
||||
After we run the tutorial code, you could login Apache DolphinScheduler web UI, |
||||
go and see the `DolphinScheduler project page`_. they is a new process definition be |
||||
created and named "Tutorial". It create by *PyDolphinScheduler* and the DAG graph as below |
||||
|
||||
.. literalinclude:: ../../examples/tutorial.py |
||||
:language: text |
||||
:lines: 24-28 |
||||
|
||||
.. _`DolphinScheduler project page`: https://dolphinscheduler.apache.org/en-us/docs/latest/user_doc/guide/project.html |
||||
.. _`Python context manager`: https://docs.python.org/3/library/stdtypes.html#context-manager-types |
||||
@ -0,0 +1,59 @@
|
||||
# Licensed to the Apache Software Foundation (ASF) under one |
||||
# or more contributor license agreements. See the NOTICE file |
||||
# distributed with this work for additional information |
||||
# regarding copyright ownership. The ASF licenses this file |
||||
# to you under the Apache License, Version 2.0 (the |
||||
# "License"); you may not use this file except in compliance |
||||
# with the License. You may obtain a copy of the License at |
||||
# |
||||
# http://www.apache.org/licenses/LICENSE-2.0 |
||||
# |
||||
# Unless required by applicable law or agreed to in writing, |
||||
# software distributed under the License is distributed on an |
||||
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
# KIND, either express or implied. See the License for the |
||||
# specific language governing permissions and limitations |
||||
# under the License. |
||||
|
||||
"""Test pydolphinscheduler docs.""" |
||||
|
||||
import re |
||||
|
||||
from tests.testing.constants import task_without_example |
||||
from tests.testing.path import get_doc_tasks, get_tasks |
||||
|
||||
ignore_code_file = {"__init__.py"} |
||||
ignore_doc_file = {"index.rst"} |
||||
|
||||
|
||||
def test_without_missing_task_rst(): |
||||
"""Test without missing any task document by compare filename. |
||||
|
||||
Avoiding add new type of tasks but without adding document about it. |
||||
""" |
||||
code_files = {p.stem for p in get_tasks(ignore_name=ignore_code_file)} |
||||
doc_files = {p.stem for p in get_doc_tasks(ignore_name=ignore_doc_file)} |
||||
assert code_files == doc_files |
||||
|
||||
|
||||
def test_task_without_example(): |
||||
"""Test task document which without example. |
||||
|
||||
Avoiding add new type of tasks but without adding example content describe how to use it. |
||||
""" |
||||
task_without_example_detected = set() |
||||
pattern = re.compile("Example\n-------") |
||||
|
||||
for doc in get_doc_tasks(ignore_name=ignore_doc_file): |
||||
search_result = pattern.search(doc.read_text()) |
||||
if not search_result: |
||||
task_without_example_detected.add(doc.stem) |
||||
assert task_without_example == task_without_example_detected |
||||
|
||||
|
||||
def test_doc_automodule_directive_name(): |
||||
"""Test task document with correct name in directive automodule.""" |
||||
pattern = re.compile(".. automodule:: (.*)") |
||||
for doc in get_doc_tasks(ignore_name=ignore_doc_file): |
||||
match_string = pattern.search(doc.read_text()).group(1) |
||||
assert f"pydolphinscheduler.tasks.{doc.stem}" == match_string |
||||
@ -0,0 +1,28 @@
|
||||
# Licensed to the Apache Software Foundation (ASF) under one |
||||
# or more contributor license agreements. See the NOTICE file |
||||
# distributed with this work for additional information |
||||
# regarding copyright ownership. The ASF licenses this file |
||||
# to you under the Apache License, Version 2.0 (the |
||||
# "License"); you may not use this file except in compliance |
||||
# with the License. You may obtain a copy of the License at |
||||
# |
||||
# http://www.apache.org/licenses/LICENSE-2.0 |
||||
# |
||||
# Unless required by applicable law or agreed to in writing, |
||||
# software distributed under the License is distributed on an |
||||
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
# KIND, either express or implied. See the License for the |
||||
# specific language governing permissions and limitations |
||||
# under the License. |
||||
|
||||
"""Constants variables for test module.""" |
||||
|
||||
# Record some task without example in directory `example`. Some of them maybe can not write example, |
||||
# but most of them just without adding by mistake, and we should add it later. |
||||
task_without_example = { |
||||
"sql", |
||||
"http", |
||||
"sub_process", |
||||
"python", |
||||
"procedure", |
||||
} |
||||
@ -0,0 +1,54 @@
|
||||
# Licensed to the Apache Software Foundation (ASF) under one |
||||
# or more contributor license agreements. See the NOTICE file |
||||
# distributed with this work for additional information |
||||
# regarding copyright ownership. The ASF licenses this file |
||||
# to you under the Apache License, Version 2.0 (the |
||||
# "License"); you may not use this file except in compliance |
||||
# with the License. You may obtain a copy of the License at |
||||
# |
||||
# http://www.apache.org/licenses/LICENSE-2.0 |
||||
# |
||||
# Unless required by applicable law or agreed to in writing, |
||||
# software distributed under the License is distributed on an |
||||
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
||||
# KIND, either express or implied. See the License for the |
||||
# specific language governing permissions and limitations |
||||
# under the License. |
||||
|
||||
"""Handle path related issue in test module.""" |
||||
|
||||
from pathlib import Path |
||||
from typing import Any, Generator |
||||
|
||||
path_code_tasks = Path(__file__).parent.parent.parent.joinpath( |
||||
"src", "pydolphinscheduler", "tasks" |
||||
) |
||||
path_example = Path(__file__).parent.parent.parent.joinpath("examples") |
||||
path_doc_tasks = Path(__file__).parent.parent.parent.joinpath("docs", "source", "tasks") |
||||
|
||||
|
||||
def get_all_examples() -> Generator[Path, Any, None]: |
||||
"""Get all examples files path in examples directory.""" |
||||
return (ex for ex in path_example.iterdir() if ex.is_file()) |
||||
|
||||
|
||||
def get_tasks(ignore_name: set = None) -> Generator[Path, Any, None]: |
||||
"""Get all tasks files path in src/pydolphinscheduler/tasks directory.""" |
||||
if not ignore_name: |
||||
ignore_name = set() |
||||
return ( |
||||
ex |
||||
for ex in path_code_tasks.iterdir() |
||||
if ex.is_file() and ex.name not in ignore_name |
||||
) |
||||
|
||||
|
||||
def get_doc_tasks(ignore_name: set = None) -> Generator[Path, Any, None]: |
||||
"""Get all tasks document path in docs/source/tasks directory.""" |
||||
if not ignore_name: |
||||
ignore_name = set() |
||||
return ( |
||||
ex |
||||
for ex in path_doc_tasks.iterdir() |
||||
if ex.is_file() and ex.name not in ignore_name |
||||
) |
||||
Loading…
Reference in new issue